Chemistry- Alloys

Question 1

What is an Alloy?

Answer 1

An alloy is a mixture of elements where at least one is a metal.

Question 2

What can we use Alloys for?

Answer 2

• dental braces
• shape memory alloys: spectacles

Question 3

Draw structure of alloy:

Question 4

Draw structure of pure metal:

Question 5

How is the structure of (pure metals) and alloys

Answer 5

• metals have a giant structure
• alloys have a giant structure

Question 6

How is the structure of (pure metals) and alloys in terms of the particles arrangement

Answer 6

-(pure) Metals: the particles are regular arranged

• Allots: the particles are irregular arranged because the atoms have different sizes

Question 7

How is the structure of (pure metals) and alloys in terms of layers

Answer 7

• (pure) metals: particles are arranged in layers that can slide over each other, allowing the metal to bend and shaped easily
• alloys: particles are NOT arranged in layers, meaning alloys cant be bent or shaped

Question 8

Pure metals are softer and weaker than alloys true or false?

Answer 8

true

Question 9

alloys are harder and stronger than pure metals true or false?

Answer 9

true

Question 10

What type of bonds are the results of the sharing of delocalised electrons between metal atoms ?

Answer 10

Metallic bond

Question 11

Describe melting and boiling point of metals:

Answer 11

The melting and boiling points of metals is high due to the strong metallic bonds that take a lot of energy to break

Question 12

How are atoms arranged in pure metals?

Answer 12

atoms are arranged in a regular, repeating pattern, forming a crystalline structure.

Question 13

name some uses of alloys:

Answer 13

• steel= construction
• bronze=coins
• brass= musical instrument

Question 14

One use of shape memory alloys:

Answer 14

Medical devices